Heating apparatus.



.F. W. MILLER.

HEATING APPARATUS. APPLICATION r1150 11111514, 1911.

Patented Apr. 13, 1915.

THE NORRIS PETERS CO.J=H0TO-LITH41v WASHINGTON. D. C.

'UNHEU s ra rns ra rnnr oriuen FRANK W. MILLER, OF CHICAGO, ILLINOIS,ASSIGNOR 0F ONE-HALF TO CLARENCE D. BAUERS, OF CHICAGO, ILLINOIS.

HEATING APPARATUS.

Specification of Letters Patent.

Patented Apr. 13, 1915.

Application filed .Tune 14, 1911. Serial No. 633,016.

To all whom it may concern Be it known that I, FRANK W. MILLER, acitizen of the United States, residing at Ohicago, in the county of Cookand State of Illinois, have invented certain new and use fulImprovements in Heating Apparatus, of which the following is aspecification.

This invention relates in general to heating systems and moreparticularly to systems for heating roundhouses and the like, and aimsto produce a system which shall be eflicient and economical in itsoperation and which will distribute the heat equally from all of theradiating elements and maintain a uniform pressure throughout thesystem.

One of the primary objects of the invention is to reduce the amount ofwater which is required in a system of this kind by connecting the pipewhich supplies water to the feed water heater with the exhaust pipe ofthe heating system so that this water is utilized as spray water tocondense the steam in the exhaust pipe before it reaches the exhaustpump; the exhaust steam and condensed steam, and the fresh water beingthen delivered by the exhaust pump to the feed water heater.

Other objects and many of the attendant advantages of this inventionwill be apparent to those skilled in the art as the same becomes morefully understood.

My invention will be best understood by referring to the followingspecification when taken in connection with the accompanying drawingsillustrating those arrangements of my improved system which appear atpresent to be most desirable.

Referring to the drawings, the single figure illustrates a heatingapparatus embodying my invention.

On the drawings reference character 5 designates a receptacle which inthe present instance is designed to be employed as a feed water heaterand adapted to be connected with the exhaust of an engine or steam pumpby a steam pipe 6. A feed water pump 7, adapted to draw water from thereceptacle or heater 5 through a pipe 8, is connected with the powerboilers by a feed water pipe 9, through which water is fed to theboilers. The pipe 6 which is connected with the receptacle 5 is adaptedto supply steam to the receptacle for heating the water therein, and thesurplus steam from the receptacle rises in a pipe 11 from whence itflows through a pipe 12 to the heating elements or radiators of theheating system, the intake end of the radiators being connected withbranches 13, one of which is shown on the drawings. Excess pressure inthe system is permitted to escape to the atmosphere through a blow-0Evalve 1 1 and the supply of steam to the heating elements may be cut ofiby means of a hand valve 15. In case it should not be desirable todeliver the steam into the receptacle 5 to heat the water therein it maybe diverted through a branch 16 by opening the valve 17 and closingvalve 18.

The exhaust ends of the heating elements or radiators are connected withbranches 19 leading from the main return or exhaust pipe 21 which isconnected with an exhaust pump 22 adapted to deliver through the pipe 23into the receptacle or heater 5.

Water is supplied to the receptacle 5 through a supply pipe 21 connectedwith any suitable source of supply and a predetermined level of water ismaintained in the receptacle by means of a float 26 pivoted on thereceptacle at 27 and connected by a link 28 to a float valve 29 which isclosed and opened as the float rises and falls. Ihe water may bedelivered directly from pipe 2% into the receptacle by closing the handvalve 31 and opening the valve 32. In warm weather, when the heatingsystem is not in use, valve 31 is customarily closed and valve 32 isopen. When the heating system is in operation, however, I contemplateusing fresh cold. water as spray water to condense the steam in theexhaust pipe 21, thereby assisting in the production of the requiredvacuum in this pipe. With this end in view a pipe 33 in which valve 31is located is connected at one end with the water supply pipe 2 1 and atits other end with the exhaust or return pipe 21. It will be evidentthat by opening valve 31 and closing valve 32 the cold water will bedelivered through pipe 33 to the pipe 21 to thereby condense the steamin this pipe so that the condensed steam and incoming water may bedelivered by pump 22 through the pipe 23 into the heater 5.

In order that the level of the water in the heater may not rise above apredetermined point I have provided an overflow pipe 341 equipped with ashut-off valve 35 which is controlled by a float positioned'within thetank and carried on an arm pivoted on the tank, said arm being connectedwith the valve by suitable links as shown. When the float rises with thewater level above-a predetermined point the valve will be opened andwhen'the float fallsthe valve will be closed. A valve 37 positioned inpipe 21 beyond the intake to the pump 22,

may be opened for the purpose of draining thesystem and the pump whendesired.

It will be manifest from the foregoing that a saving in water is securedby my sys tem in that the exhaust steam from the heating elements iscondensed and returned: to the heater and also that the incoming wateris utilized to produce a vacuum in the re-' turn pipe so as to relievethe strain on the pump While I'have shown and described a preferredarrangement of pipes it will be manifest that the arrangement can bevaried considerably without departing from the spirit of this invention.I i

I claim: 7 V

lpln a'heating apparatus, the combination of an exhaust steam pipe, afeed water heater, a pump having its intake connected.

branch pipe'to the exhaust pipe.

2; Ina heating'apparatus, the combination of an exhaust steam pipe,afeed water heater, a fresh water supply pipe connected therewith, abranch pipe connecting the water supply pipe with said exhaust pipe, afloat located in said heater for controlling the supply of fresh water,valves whereby the ater may be directed to the heater directly or to theexhaust pipe, and an exhaust pump connected to discharge the fresh waterand the steam in the exhaust pipe condensed thereby into the feed waterheater;

3; In aheating apparatus, the combination of an exhaust steam pipe, anexhaust pump, a water supply pipe connected with the exhaust pipe, aconnection from said pump to the feed water heater whereby the waterand; the exhaust steam condensed thereby may be discharged by the pumpfloat in said receptacle controllingsaid valve, abranch pipe connectedwith said fresh water pipe between said valve and the 7 receptacle, saidbranch pipe being connected at its other endto said exhaust pipe, and

means for-directing the flow of water from said fresh water pipedirectly to therece'p tacle or through said branch pipe to theexhaustpipe.

FRANK W. MILLERZ \Vitnesses:

Ina J. lVrLsolv, M. A. KIDDIE.

Copies of this-patent may" be obtained'for five cents each, by.addressing, the Commissioner of Patents,- Washington, D. C."

